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khays |
/* Disassembly routines for TMS320C30 architecture
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Copyright 1998, 1999, 2000, 2002, 2005, 2007, 2009
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Free Software Foundation, Inc.
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Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au)
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This file is part of the GNU opcodes library.
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This library is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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It is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with this file; see the file COPYING. If not, write to the
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Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include <errno.h>
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#include <math.h>
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#include "sysdep.h"
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#include "dis-asm.h"
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#include "opcode/tic30.h"
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#define NORMAL_INSN 1
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#define PARALLEL_INSN 2
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/* Gets the type of instruction based on the top 2 or 3 bits of the
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instruction word. */
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#define GET_TYPE(insn) (insn & 0x80000000 ? insn & 0xC0000000 : insn & 0xE0000000)
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/* Instruction types. */
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#define TWO_OPERAND_1 0x00000000
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#define TWO_OPERAND_2 0x40000000
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#define THREE_OPERAND 0x20000000
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#define PAR_STORE 0xC0000000
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#define MUL_ADDS 0x80000000
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#define BRANCHES 0x60000000
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/* Specific instruction id bits. */
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#define NORMAL_IDEN 0x1F800000
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#define PAR_STORE_IDEN 0x3E000000
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#define MUL_ADD_IDEN 0x2C000000
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#define BR_IMM_IDEN 0x1F000000
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#define BR_COND_IDEN 0x1C3F0000
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/* Addressing modes. */
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#define AM_REGISTER 0x00000000
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#define AM_DIRECT 0x00200000
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#define AM_INDIRECT 0x00400000
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#define AM_IMM 0x00600000
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#define P_FIELD 0x03000000
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#define REG_AR0 0x08
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#define LDP_INSN 0x08700000
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/* TMS320C30 program counter for current instruction. */
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static unsigned int _pc;
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struct instruction
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{
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int type;
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insn_template *tm;
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partemplate *ptm;
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};
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static int
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get_tic30_instruction (unsigned long insn_word, struct instruction *insn)
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{
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switch (GET_TYPE (insn_word))
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{
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case TWO_OPERAND_1:
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case TWO_OPERAND_2:
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case THREE_OPERAND:
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insn->type = NORMAL_INSN;
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{
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insn_template *current_optab = (insn_template *) tic30_optab;
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for (; current_optab < tic30_optab_end; current_optab++)
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{
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if (GET_TYPE (current_optab->base_opcode) == GET_TYPE (insn_word))
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{
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if (current_optab->operands == 0)
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{
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if (current_optab->base_opcode == insn_word)
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{
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insn->tm = current_optab;
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break;
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}
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}
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else if ((current_optab->base_opcode & NORMAL_IDEN) == (insn_word & NORMAL_IDEN))
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{
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insn->tm = current_optab;
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break;
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}
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}
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}
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}
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break;
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case PAR_STORE:
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insn->type = PARALLEL_INSN;
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{
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partemplate *current_optab = (partemplate *) tic30_paroptab;
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for (; current_optab < tic30_paroptab_end; current_optab++)
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{
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if (GET_TYPE (current_optab->base_opcode) == GET_TYPE (insn_word))
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{
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if ((current_optab->base_opcode & PAR_STORE_IDEN)
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== (insn_word & PAR_STORE_IDEN))
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{
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insn->ptm = current_optab;
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break;
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}
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}
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}
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}
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break;
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case MUL_ADDS:
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insn->type = PARALLEL_INSN;
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{
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partemplate *current_optab = (partemplate *) tic30_paroptab;
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for (; current_optab < tic30_paroptab_end; current_optab++)
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{
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if (GET_TYPE (current_optab->base_opcode) == GET_TYPE (insn_word))
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{
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if ((current_optab->base_opcode & MUL_ADD_IDEN)
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== (insn_word & MUL_ADD_IDEN))
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{
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insn->ptm = current_optab;
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break;
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}
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}
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}
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}
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break;
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case BRANCHES:
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insn->type = NORMAL_INSN;
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{
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insn_template *current_optab = (insn_template *) tic30_optab;
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for (; current_optab < tic30_optab_end; current_optab++)
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{
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if (GET_TYPE (current_optab->base_opcode) == GET_TYPE (insn_word))
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{
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if (current_optab->operand_types[0] & Imm24)
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{
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if ((current_optab->base_opcode & BR_IMM_IDEN)
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== (insn_word & BR_IMM_IDEN))
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{
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insn->tm = current_optab;
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break;
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}
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}
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else if (current_optab->operands > 0)
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{
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if ((current_optab->base_opcode & BR_COND_IDEN)
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== (insn_word & BR_COND_IDEN))
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{
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insn->tm = current_optab;
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break;
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}
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}
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else
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{
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if ((current_optab->base_opcode & (BR_COND_IDEN | 0x00800000))
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== (insn_word & (BR_COND_IDEN | 0x00800000)))
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{
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insn->tm = current_optab;
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break;
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}
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}
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}
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}
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}
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break;
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default:
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return 0;
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}
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return 1;
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}
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static int
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get_register_operand (unsigned char fragment, char *buffer)
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{
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const reg *current_reg = tic30_regtab;
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if (buffer == NULL)
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return 0;
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for (; current_reg < tic30_regtab_end; current_reg++)
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{
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if ((fragment & 0x1F) == current_reg->opcode)
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{
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strcpy (buffer, current_reg->name);
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return 1;
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}
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}
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return 0;
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}
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static int
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get_indirect_operand (unsigned short fragment,
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int size,
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char *buffer)
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{
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unsigned char mod;
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unsigned arnum;
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unsigned char disp;
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if (buffer == NULL)
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return 0;
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/* Determine which bits identify the sections of the indirect
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operand based on the size in bytes. */
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switch (size)
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{
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case 1:
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mod = (fragment & 0x00F8) >> 3;
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arnum = (fragment & 0x0007);
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disp = 0;
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break;
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case 2:
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mod = (fragment & 0xF800) >> 11;
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arnum = (fragment & 0x0700) >> 8;
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disp = (fragment & 0x00FF);
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break;
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default:
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return 0;
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}
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{
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const ind_addr_type *current_ind = tic30_indaddr_tab;
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for (; current_ind < tic30_indaddrtab_end; current_ind++)
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{
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243 |
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if (current_ind->modfield == mod)
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{
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if (current_ind->displacement == IMPLIED_DISP && size == 2)
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continue;
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else
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{
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size_t i, len;
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int bufcnt;
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len = strlen (current_ind->syntax);
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for (i = 0, bufcnt = 0; i < len; i++, bufcnt++)
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{
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buffer[bufcnt] = current_ind->syntax[i];
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257 |
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if (buffer[bufcnt - 1] == 'a' && buffer[bufcnt] == 'r')
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buffer[++bufcnt] = arnum + '0';
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259 |
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if (buffer[bufcnt] == '('
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260 |
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&& current_ind->displacement == DISP_REQUIRED)
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{
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262 |
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sprintf (&buffer[bufcnt + 1], "%u", disp);
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263 |
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bufcnt += strlen (&buffer[bufcnt + 1]);
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264 |
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}
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265 |
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}
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266 |
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buffer[bufcnt + 1] = '\0';
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267 |
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break;
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268 |
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}
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269 |
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}
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270 |
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}
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271 |
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}
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272 |
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return 1;
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273 |
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}
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274 |
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275 |
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static int
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276 |
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cnvt_tmsfloat_ieee (unsigned long tmsfloat, int size, float *ieeefloat)
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{
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278 |
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unsigned long exponent, sign, mant;
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279 |
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union
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280 |
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{
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281 |
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unsigned long l;
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282 |
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float f;
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283 |
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} val;
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284 |
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285 |
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if (size == 2)
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286 |
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{
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287 |
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if ((tmsfloat & 0x0000F000) == 0x00008000)
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288 |
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tmsfloat = 0x80000000;
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289 |
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else
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290 |
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{
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291 |
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tmsfloat <<= 16;
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292 |
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tmsfloat = (long) tmsfloat >> 4;
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293 |
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}
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294 |
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}
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295 |
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exponent = tmsfloat & 0xFF000000;
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296 |
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if (exponent == 0x80000000)
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297 |
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{
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298 |
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*ieeefloat = 0.0;
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299 |
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return 1;
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300 |
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}
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301 |
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exponent += 0x7F000000;
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302 |
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sign = (tmsfloat & 0x00800000) << 8;
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303 |
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mant = tmsfloat & 0x007FFFFF;
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304 |
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if (exponent == 0xFF000000)
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305 |
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{
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306 |
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if (mant == 0)
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307 |
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*ieeefloat = ERANGE;
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308 |
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#ifdef HUGE_VALF
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309 |
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if (sign == 0)
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310 |
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*ieeefloat = HUGE_VALF;
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311 |
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else
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312 |
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*ieeefloat = -HUGE_VALF;
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313 |
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#else
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314 |
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if (sign == 0)
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315 |
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*ieeefloat = 1.0 / 0.0;
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316 |
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else
|
317 |
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*ieeefloat = -1.0 / 0.0;
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318 |
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#endif
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319 |
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return 1;
|
320 |
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}
|
321 |
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exponent >>= 1;
|
322 |
|
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if (sign)
|
323 |
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{
|
324 |
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mant = (~mant) & 0x007FFFFF;
|
325 |
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mant += 1;
|
326 |
|
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exponent += mant & 0x00800000;
|
327 |
|
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exponent &= 0x7F800000;
|
328 |
|
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mant &= 0x007FFFFF;
|
329 |
|
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}
|
330 |
|
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if (tmsfloat == 0x80000000)
|
331 |
|
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sign = mant = exponent = 0;
|
332 |
|
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tmsfloat = sign | exponent | mant;
|
333 |
|
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val.l = tmsfloat;
|
334 |
|
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*ieeefloat = val.f;
|
335 |
|
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return 1;
|
336 |
|
|
}
|
337 |
|
|
|
338 |
|
|
static int
|
339 |
|
|
print_two_operand (disassemble_info *info,
|
340 |
|
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unsigned long insn_word,
|
341 |
|
|
struct instruction *insn)
|
342 |
|
|
{
|
343 |
|
|
char name[12];
|
344 |
|
|
char operand[2][13] =
|
345 |
|
|
{
|
346 |
|
|
{0},
|
347 |
|
|
{0}
|
348 |
|
|
};
|
349 |
|
|
float f_number;
|
350 |
|
|
|
351 |
|
|
if (insn->tm == NULL)
|
352 |
|
|
return 0;
|
353 |
|
|
strcpy (name, insn->tm->name);
|
354 |
|
|
if (insn->tm->opcode_modifier == AddressMode)
|
355 |
|
|
{
|
356 |
|
|
int src_op, dest_op;
|
357 |
|
|
/* Determine whether instruction is a store or a normal instruction. */
|
358 |
|
|
if ((insn->tm->operand_types[1] & (Direct | Indirect))
|
359 |
|
|
== (Direct | Indirect))
|
360 |
|
|
{
|
361 |
|
|
src_op = 1;
|
362 |
|
|
dest_op = 0;
|
363 |
|
|
}
|
364 |
|
|
else
|
365 |
|
|
{
|
366 |
|
|
src_op = 0;
|
367 |
|
|
dest_op = 1;
|
368 |
|
|
}
|
369 |
|
|
/* Get the destination register. */
|
370 |
|
|
if (insn->tm->operands == 2)
|
371 |
|
|
get_register_operand ((insn_word & 0x001F0000) >> 16, operand[dest_op]);
|
372 |
|
|
/* Get the source operand based on addressing mode. */
|
373 |
|
|
switch (insn_word & AddressMode)
|
374 |
|
|
{
|
375 |
|
|
case AM_REGISTER:
|
376 |
|
|
/* Check for the NOP instruction before getting the operand. */
|
377 |
|
|
if ((insn->tm->operand_types[0] & NotReq) == 0)
|
378 |
|
|
get_register_operand ((insn_word & 0x0000001F), operand[src_op]);
|
379 |
|
|
break;
|
380 |
|
|
case AM_DIRECT:
|
381 |
|
|
sprintf (operand[src_op], "@0x%lX", (insn_word & 0x0000FFFF));
|
382 |
|
|
break;
|
383 |
|
|
case AM_INDIRECT:
|
384 |
|
|
get_indirect_operand ((insn_word & 0x0000FFFF), 2, operand[src_op]);
|
385 |
|
|
break;
|
386 |
|
|
case AM_IMM:
|
387 |
|
|
/* Get the value of the immediate operand based on variable type. */
|
388 |
|
|
switch (insn->tm->imm_arg_type)
|
389 |
|
|
{
|
390 |
|
|
case Imm_Float:
|
391 |
|
|
cnvt_tmsfloat_ieee ((insn_word & 0x0000FFFF), 2, &f_number);
|
392 |
|
|
sprintf (operand[src_op], "%2.2f", f_number);
|
393 |
|
|
break;
|
394 |
|
|
case Imm_SInt:
|
395 |
|
|
sprintf (operand[src_op], "%d", (short) (insn_word & 0x0000FFFF));
|
396 |
|
|
break;
|
397 |
|
|
case Imm_UInt:
|
398 |
|
|
sprintf (operand[src_op], "%lu", (insn_word & 0x0000FFFF));
|
399 |
|
|
break;
|
400 |
|
|
default:
|
401 |
|
|
return 0;
|
402 |
|
|
}
|
403 |
|
|
/* Handle special case for LDP instruction. */
|
404 |
|
|
if ((insn_word & 0xFFFFFF00) == LDP_INSN)
|
405 |
|
|
{
|
406 |
|
|
strcpy (name, "ldp");
|
407 |
|
|
sprintf (operand[0], "0x%06lX", (insn_word & 0x000000FF) << 16);
|
408 |
|
|
operand[1][0] = '\0';
|
409 |
|
|
}
|
410 |
|
|
}
|
411 |
|
|
}
|
412 |
|
|
/* Handle case for stack and rotate instructions. */
|
413 |
|
|
else if (insn->tm->operands == 1)
|
414 |
|
|
{
|
415 |
|
|
if (insn->tm->opcode_modifier == StackOp)
|
416 |
|
|
get_register_operand ((insn_word & 0x001F0000) >> 16, operand[0]);
|
417 |
|
|
}
|
418 |
|
|
/* Output instruction to stream. */
|
419 |
|
|
info->fprintf_func (info->stream, " %s %s%c%s", name,
|
420 |
|
|
operand[0][0] ? operand[0] : "",
|
421 |
|
|
operand[1][0] ? ',' : ' ',
|
422 |
|
|
operand[1][0] ? operand[1] : "");
|
423 |
|
|
return 1;
|
424 |
|
|
}
|
425 |
|
|
|
426 |
|
|
static int
|
427 |
|
|
print_three_operand (disassemble_info *info,
|
428 |
|
|
unsigned long insn_word,
|
429 |
|
|
struct instruction *insn)
|
430 |
|
|
{
|
431 |
|
|
char operand[3][13] =
|
432 |
|
|
{
|
433 |
|
|
{0},
|
434 |
|
|
{0},
|
435 |
|
|
{0}
|
436 |
|
|
};
|
437 |
|
|
|
438 |
|
|
if (insn->tm == NULL)
|
439 |
|
|
return 0;
|
440 |
|
|
switch (insn_word & AddressMode)
|
441 |
|
|
{
|
442 |
|
|
case AM_REGISTER:
|
443 |
|
|
get_register_operand ((insn_word & 0x000000FF), operand[0]);
|
444 |
|
|
get_register_operand ((insn_word & 0x0000FF00) >> 8, operand[1]);
|
445 |
|
|
break;
|
446 |
|
|
case AM_DIRECT:
|
447 |
|
|
get_register_operand ((insn_word & 0x000000FF), operand[0]);
|
448 |
|
|
get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1]);
|
449 |
|
|
break;
|
450 |
|
|
case AM_INDIRECT:
|
451 |
|
|
get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0]);
|
452 |
|
|
get_register_operand ((insn_word & 0x0000FF00) >> 8, operand[1]);
|
453 |
|
|
break;
|
454 |
|
|
case AM_IMM:
|
455 |
|
|
get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0]);
|
456 |
|
|
get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1]);
|
457 |
|
|
break;
|
458 |
|
|
default:
|
459 |
|
|
return 0;
|
460 |
|
|
}
|
461 |
|
|
if (insn->tm->operands == 3)
|
462 |
|
|
get_register_operand ((insn_word & 0x001F0000) >> 16, operand[2]);
|
463 |
|
|
info->fprintf_func (info->stream, " %s %s,%s%c%s", insn->tm->name,
|
464 |
|
|
operand[0], operand[1],
|
465 |
|
|
operand[2][0] ? ',' : ' ',
|
466 |
|
|
operand[2][0] ? operand[2] : "");
|
467 |
|
|
return 1;
|
468 |
|
|
}
|
469 |
|
|
|
470 |
|
|
static int
|
471 |
|
|
print_par_insn (disassemble_info *info,
|
472 |
|
|
unsigned long insn_word,
|
473 |
|
|
struct instruction *insn)
|
474 |
|
|
{
|
475 |
|
|
size_t i, len;
|
476 |
|
|
char *name1, *name2;
|
477 |
|
|
char operand[2][3][13] =
|
478 |
|
|
{
|
479 |
|
|
{
|
480 |
|
|
{0},
|
481 |
|
|
{0},
|
482 |
|
|
{0}
|
483 |
|
|
},
|
484 |
|
|
{
|
485 |
|
|
{0},
|
486 |
|
|
{0},
|
487 |
|
|
{0}
|
488 |
|
|
}
|
489 |
|
|
};
|
490 |
|
|
|
491 |
|
|
if (insn->ptm == NULL)
|
492 |
|
|
return 0;
|
493 |
|
|
/* Parse out the names of each of the parallel instructions from the
|
494 |
|
|
q_insn1_insn2 format. */
|
495 |
|
|
name1 = (char *) strdup (insn->ptm->name + 2);
|
496 |
|
|
name2 = "";
|
497 |
|
|
len = strlen (name1);
|
498 |
|
|
for (i = 0; i < len; i++)
|
499 |
|
|
{
|
500 |
|
|
if (name1[i] == '_')
|
501 |
|
|
{
|
502 |
|
|
name2 = &name1[i + 1];
|
503 |
|
|
name1[i] = '\0';
|
504 |
|
|
break;
|
505 |
|
|
}
|
506 |
|
|
}
|
507 |
|
|
/* Get the operands of the instruction based on the operand order. */
|
508 |
|
|
switch (insn->ptm->oporder)
|
509 |
|
|
{
|
510 |
|
|
case OO_4op1:
|
511 |
|
|
get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0][0]);
|
512 |
|
|
get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1][1]);
|
513 |
|
|
get_register_operand ((insn_word >> 16) & 0x07, operand[1][0]);
|
514 |
|
|
get_register_operand ((insn_word >> 22) & 0x07, operand[0][1]);
|
515 |
|
|
break;
|
516 |
|
|
case OO_4op2:
|
517 |
|
|
get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0][0]);
|
518 |
|
|
get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1][0]);
|
519 |
|
|
get_register_operand ((insn_word >> 19) & 0x07, operand[1][1]);
|
520 |
|
|
get_register_operand ((insn_word >> 22) & 0x07, operand[0][1]);
|
521 |
|
|
break;
|
522 |
|
|
case OO_4op3:
|
523 |
|
|
get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0][1]);
|
524 |
|
|
get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1][1]);
|
525 |
|
|
get_register_operand ((insn_word >> 16) & 0x07, operand[1][0]);
|
526 |
|
|
get_register_operand ((insn_word >> 22) & 0x07, operand[0][0]);
|
527 |
|
|
break;
|
528 |
|
|
case OO_5op1:
|
529 |
|
|
get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0][0]);
|
530 |
|
|
get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1][1]);
|
531 |
|
|
get_register_operand ((insn_word >> 16) & 0x07, operand[1][0]);
|
532 |
|
|
get_register_operand ((insn_word >> 19) & 0x07, operand[0][1]);
|
533 |
|
|
get_register_operand ((insn_word >> 22) & 0x07, operand[0][2]);
|
534 |
|
|
break;
|
535 |
|
|
case OO_5op2:
|
536 |
|
|
get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0][1]);
|
537 |
|
|
get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1][1]);
|
538 |
|
|
get_register_operand ((insn_word >> 16) & 0x07, operand[1][0]);
|
539 |
|
|
get_register_operand ((insn_word >> 19) & 0x07, operand[0][0]);
|
540 |
|
|
get_register_operand ((insn_word >> 22) & 0x07, operand[0][2]);
|
541 |
|
|
break;
|
542 |
|
|
case OO_PField:
|
543 |
|
|
if (insn_word & 0x00800000)
|
544 |
|
|
get_register_operand (0x01, operand[0][2]);
|
545 |
|
|
else
|
546 |
|
|
get_register_operand (0x00, operand[0][2]);
|
547 |
|
|
if (insn_word & 0x00400000)
|
548 |
|
|
get_register_operand (0x03, operand[1][2]);
|
549 |
|
|
else
|
550 |
|
|
get_register_operand (0x02, operand[1][2]);
|
551 |
|
|
switch (insn_word & P_FIELD)
|
552 |
|
|
{
|
553 |
|
|
case 0x00000000:
|
554 |
|
|
get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0][1]);
|
555 |
|
|
get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[0][0]);
|
556 |
|
|
get_register_operand ((insn_word >> 16) & 0x07, operand[1][1]);
|
557 |
|
|
get_register_operand ((insn_word >> 19) & 0x07, operand[1][0]);
|
558 |
|
|
break;
|
559 |
|
|
case 0x01000000:
|
560 |
|
|
get_indirect_operand ((insn_word & 0x000000FF), 1, operand[1][0]);
|
561 |
|
|
get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[0][0]);
|
562 |
|
|
get_register_operand ((insn_word >> 16) & 0x07, operand[1][1]);
|
563 |
|
|
get_register_operand ((insn_word >> 19) & 0x07, operand[0][1]);
|
564 |
|
|
break;
|
565 |
|
|
case 0x02000000:
|
566 |
|
|
get_indirect_operand ((insn_word & 0x000000FF), 1, operand[1][1]);
|
567 |
|
|
get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1][0]);
|
568 |
|
|
get_register_operand ((insn_word >> 16) & 0x07, operand[0][1]);
|
569 |
|
|
get_register_operand ((insn_word >> 19) & 0x07, operand[0][0]);
|
570 |
|
|
break;
|
571 |
|
|
case 0x03000000:
|
572 |
|
|
get_indirect_operand ((insn_word & 0x000000FF), 1, operand[1][1]);
|
573 |
|
|
get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[0][0]);
|
574 |
|
|
get_register_operand ((insn_word >> 16) & 0x07, operand[1][0]);
|
575 |
|
|
get_register_operand ((insn_word >> 19) & 0x07, operand[0][1]);
|
576 |
|
|
break;
|
577 |
|
|
}
|
578 |
|
|
break;
|
579 |
|
|
default:
|
580 |
|
|
return 0;
|
581 |
|
|
}
|
582 |
|
|
info->fprintf_func (info->stream, " %s %s,%s%c%s", name1,
|
583 |
|
|
operand[0][0], operand[0][1],
|
584 |
|
|
operand[0][2][0] ? ',' : ' ',
|
585 |
|
|
operand[0][2][0] ? operand[0][2] : "");
|
586 |
|
|
info->fprintf_func (info->stream, "\n\t\t\t|| %s %s,%s%c%s", name2,
|
587 |
|
|
operand[1][0], operand[1][1],
|
588 |
|
|
operand[1][2][0] ? ',' : ' ',
|
589 |
|
|
operand[1][2][0] ? operand[1][2] : "");
|
590 |
|
|
free (name1);
|
591 |
|
|
return 1;
|
592 |
|
|
}
|
593 |
|
|
|
594 |
|
|
static int
|
595 |
|
|
print_branch (disassemble_info *info,
|
596 |
|
|
unsigned long insn_word,
|
597 |
|
|
struct instruction *insn)
|
598 |
|
|
{
|
599 |
|
|
char operand[2][13] =
|
600 |
|
|
{
|
601 |
|
|
{0},
|
602 |
|
|
{0}
|
603 |
|
|
};
|
604 |
|
|
unsigned long address;
|
605 |
|
|
int print_label = 0;
|
606 |
|
|
|
607 |
|
|
if (insn->tm == NULL)
|
608 |
|
|
return 0;
|
609 |
|
|
/* Get the operands for 24-bit immediate jumps. */
|
610 |
|
|
if (insn->tm->operand_types[0] & Imm24)
|
611 |
|
|
{
|
612 |
|
|
address = insn_word & 0x00FFFFFF;
|
613 |
|
|
sprintf (operand[0], "0x%lX", address);
|
614 |
|
|
print_label = 1;
|
615 |
|
|
}
|
616 |
|
|
/* Get the operand for the trap instruction. */
|
617 |
|
|
else if (insn->tm->operand_types[0] & IVector)
|
618 |
|
|
{
|
619 |
|
|
address = insn_word & 0x0000001F;
|
620 |
|
|
sprintf (operand[0], "0x%lX", address);
|
621 |
|
|
}
|
622 |
|
|
else
|
623 |
|
|
{
|
624 |
|
|
address = insn_word & 0x0000FFFF;
|
625 |
|
|
/* Get the operands for the DB instructions. */
|
626 |
|
|
if (insn->tm->operands == 2)
|
627 |
|
|
{
|
628 |
|
|
get_register_operand (((insn_word & 0x01C00000) >> 22) + REG_AR0, operand[0]);
|
629 |
|
|
if (insn_word & PCRel)
|
630 |
|
|
{
|
631 |
|
|
sprintf (operand[1], "%d", (short) address);
|
632 |
|
|
print_label = 1;
|
633 |
|
|
}
|
634 |
|
|
else
|
635 |
|
|
get_register_operand (insn_word & 0x0000001F, operand[1]);
|
636 |
|
|
}
|
637 |
|
|
/* Get the operands for the standard branches. */
|
638 |
|
|
else if (insn->tm->operands == 1)
|
639 |
|
|
{
|
640 |
|
|
if (insn_word & PCRel)
|
641 |
|
|
{
|
642 |
|
|
address = (short) address;
|
643 |
|
|
sprintf (operand[0], "%ld", address);
|
644 |
|
|
print_label = 1;
|
645 |
|
|
}
|
646 |
|
|
else
|
647 |
|
|
get_register_operand (insn_word & 0x0000001F, operand[0]);
|
648 |
|
|
}
|
649 |
|
|
}
|
650 |
|
|
info->fprintf_func (info->stream, " %s %s%c%s", insn->tm->name,
|
651 |
|
|
operand[0][0] ? operand[0] : "",
|
652 |
|
|
operand[1][0] ? ',' : ' ',
|
653 |
|
|
operand[1][0] ? operand[1] : "");
|
654 |
|
|
/* Print destination of branch in relation to current symbol. */
|
655 |
|
|
if (print_label && info->symbols)
|
656 |
|
|
{
|
657 |
|
|
asymbol *sym = *info->symbols;
|
658 |
|
|
|
659 |
|
|
if ((insn->tm->opcode_modifier == PCRel) && (insn_word & PCRel))
|
660 |
|
|
{
|
661 |
|
|
address = (_pc + 1 + (short) address) - ((sym->section->vma + sym->value) / 4);
|
662 |
|
|
/* Check for delayed instruction, if so adjust destination. */
|
663 |
|
|
if (insn_word & 0x00200000)
|
664 |
|
|
address += 2;
|
665 |
|
|
}
|
666 |
|
|
else
|
667 |
|
|
{
|
668 |
|
|
address -= ((sym->section->vma + sym->value) / 4);
|
669 |
|
|
}
|
670 |
|
|
if (address == 0)
|
671 |
|
|
info->fprintf_func (info->stream, " <%s>", sym->name);
|
672 |
|
|
else
|
673 |
|
|
info->fprintf_func (info->stream, " <%s %c %d>", sym->name,
|
674 |
|
|
((short) address < 0) ? '-' : '+',
|
675 |
|
|
abs (address));
|
676 |
|
|
}
|
677 |
|
|
return 1;
|
678 |
|
|
}
|
679 |
|
|
|
680 |
|
|
int
|
681 |
|
|
print_insn_tic30 (bfd_vma pc, disassemble_info *info)
|
682 |
|
|
{
|
683 |
|
|
unsigned long insn_word;
|
684 |
|
|
struct instruction insn = { 0, NULL, NULL };
|
685 |
|
|
bfd_vma bufaddr = pc - info->buffer_vma;
|
686 |
|
|
|
687 |
|
|
/* Obtain the current instruction word from the buffer. */
|
688 |
|
|
insn_word = (*(info->buffer + bufaddr) << 24) | (*(info->buffer + bufaddr + 1) << 16) |
|
689 |
|
|
(*(info->buffer + bufaddr + 2) << 8) | *(info->buffer + bufaddr + 3);
|
690 |
|
|
_pc = pc / 4;
|
691 |
|
|
/* Get the instruction refered to by the current instruction word
|
692 |
|
|
and print it out based on its type. */
|
693 |
|
|
if (!get_tic30_instruction (insn_word, &insn))
|
694 |
|
|
return -1;
|
695 |
|
|
switch (GET_TYPE (insn_word))
|
696 |
|
|
{
|
697 |
|
|
case TWO_OPERAND_1:
|
698 |
|
|
case TWO_OPERAND_2:
|
699 |
|
|
if (!print_two_operand (info, insn_word, &insn))
|
700 |
|
|
return -1;
|
701 |
|
|
break;
|
702 |
|
|
case THREE_OPERAND:
|
703 |
|
|
if (!print_three_operand (info, insn_word, &insn))
|
704 |
|
|
return -1;
|
705 |
|
|
break;
|
706 |
|
|
case PAR_STORE:
|
707 |
|
|
case MUL_ADDS:
|
708 |
|
|
if (!print_par_insn (info, insn_word, &insn))
|
709 |
|
|
return -1;
|
710 |
|
|
break;
|
711 |
|
|
case BRANCHES:
|
712 |
|
|
if (!print_branch (info, insn_word, &insn))
|
713 |
|
|
return -1;
|
714 |
|
|
break;
|
715 |
|
|
}
|
716 |
|
|
return 4;
|
717 |
|
|
}
|